is_not_a mirrors is_a. It is particularly useful when iterating over a category and excluding members of a sub-category (iterating over all images associated with a page except images in the thumbnail category).

Example for looping over all media in a rsc but excluding the thumbnail resources:

{% for m in m.rsc[id].media|is_not_a:"thumbnail" %}
{% endfor %}

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is_a Resource lists is_visible

Referred by


Filters transform template variables before they are rendered.